Imperdan Fv 40 Gp

IMPERDAN FV 40 GP is a waterproofing bituminous sheet with self-protected surface of 4.0 kg/m².
Composed of a fibreglass reinforcement, covered on both sides with polymer modified bitumen (pliability -5ºC) mastic. On the upper side of the sheet, mineral protection in light grey colour is used as protective material. The anti-adhesive material used on the lower side is polyethylene film.


 Technical Data

External fire performance Broof(t1) UNE-EN 1187; UNE-EN 13501-5
Reaction to fire E UNE-EN 11925-2; UNE-EN 13501-1
Watertightness Pasa UNE-EN 1928
Longitudinal tensile strength 350 ± 100 N/5cm UNE-EN 12311-1
Transversal tensile strength 250 ± 100 N/5cm UNE-EN 12311-1
Longitudinal elongation at break >1 % UNE-EN 12311-1
Transversal elongation at break >1 % UNE-EN 12311-1
Resistance to root penetration No Pasa EN 13948
Resistance to static loading NPD kg UNE-EN 12730
Resistance to impact NPD mm UNE-EN 12691
Longitudinal resistance to tearing (nail shank) NPD N UNE-EN 12310-1
Transversal resistance to tearing (nail shank) NPD N UNE-EN 12310-1
Joint strength: peel resistance NPD UNE-EN 12316-1
Joint strength: shear resistance NPD UNE-EN 12317-1
Flexibility at low temperature < -5 ºC UNE-EN 1109
Humidity resistance factor 20.000 UNE-EN 1931
Dangerous substances NPD
Flexibility at low temperature (pliability) after aging +5 ± 5 ºC UNE-EN 1109
Flow resistance at elevated temperature after aging 120 ±10 ºC UN-EN 1110

Pasa = Positive or correct No pasa = Negative PND = No performance determined – = Not necessary

 Addtitional Technical Data

Mass per unit area (nominal) 4.0 kg/m²
Nominal thickness 2.5(SOLAPO) mm
Flow resistance at elevated temperature >130 ºC UN-EN 1110
Dimensional stability at elevated temperature (longitudinal) NPD % UNE-EN 1107-1
Dimensional stability at elevated temperature (transversal) NPD % UNE-EN 1107-1
Adhesion of granules < 30 % UNE-EN 12039

Membranes thickness tolerance: = -0,3 mm, apart from membranes with thickness 2 and 2,4 mm whose tolerance is =-0,2 mm.
Membranes mass per unit area tolerance: -5% (mini) and +10% (maxi) from nominal value.

 Environmental Information

Environmental Information Declared Value Units Norm
Pre-consumer Recycled Content 0 %
Post-consumer Recycled Content 35 %
Manufacturing Location Fontanar, Guadalajara (España)
Solar Reflectance Index (SRI) with REVESTIDAN REIMPER WHITE 101 ASTM E1980-11
Volatile organic compounds (VOCs) 50 (A+)* µg/m3 ISO 16000-6:2006

* A+ classification according to Decree No. 2011-321 of 23 March 2011 the Ministry French Ecology, Sustainable Development, Transportation and Housing

 Standards and Certification

UNE EN 13707 standard.
CE marking.


Length 10 m
Width 1 m
Roll surface 10 m2
Rolls per pallet 23 rolls
Product Code 141089

  1. mineral protection
  2. polymer modified bitumen (pliability -5ºC)
  3. fibreglass
  4. polyethylene film

 Maintenance recommendations

Maintenance requirements for Danosa Roofing Products

The following maintenance checks must be adhered to:
– A general examination on the condition of the waterproofing and surrounding roof components.
– An inspection of all functional roofing elements including skylights, outlets, upstands, penetrations and any other visible roofing components.
– Clean outlets, drains, gutters and remove any debris from the roof.
– Periodic removal of mildew, moss, herbs or any other kind of vegetation that has been accumulation on the waterproofing.
– Periodic removal of possible sediments accumulated on the deck (silt, sledges, slate granules, etc) by occasional water accumulation.
– Periodic removal of debris and small objects that may have accumulated on the roof.
– Ensure surrounding structural elements are sound such as eaves, flashings, slate tiles and brickwork.
– Ensure that the waterproofing is in good condition and there are no blisters, damage or separation.
– Review the condition of the waterproofing (adherence to upstands, condition of overlaps, visual appearance, etc) and repair the defects observed.

These operations must be carried out twice a year, preferably at the beginning of spring or autumn and must be increased in case of decks or valleys with zero falls. It is also necessary to perform additional maintenance depending on the type of roof, location and proximity of roofs to areas with trees or in areas with high levels of pollution.

More details on the document Maintenance and repair recommendations for flat roofs waterproofed with modified bitumen sheets

 Handling, Storage and Conservation

– This product is not toxic or flammable.
– It must be stored dry and protected from rain, sun, heat and low temperatures.
– It must be stored upright.
– Don’t store two pallets high.
– You must use the oldest batch of products first.
– No waterproofing works should be performed when weather conditions may be unsuitable. These include snow or ice on the roof, heavy rain, moisture, when there are strong winds.
– In all cases, the rules of health and safety at work and the rules of good construction practice should be considered.
– To store in racking at height the shelves must have three stringers or beams under the wooden pallet.
– Before handling the pallet you must check the status of the pallet and reinforce if necessary.
– If you are using a crane for handling purposes, you must ensure protection for others as stated on our packaging.
– Danosa advise you to consult the MSDS for this product which is available at or may be obtained by writing to our Technical Department.


The information contained in this document and any other advice provided, are given in good faith, based on DANOSA’s current knowledge and experience when products are properly stored, handled and applied, in normal situations and in accordance with the recommendations of DANOSA. The information applies only to the application (s) and the product (s) to which reference is expressly made. In case of changes in the parameters of the application, or in case of a different application, consult the DANOSA Technical Service before using the DANOSA products. The information contained herein does not exonerate the responsibility of the building agents to test the products for the application and intended use, as well as their correct application in accordance with current legal regulations.
Orders are accepted in accordance with the terms of our current General Sales Conditions.
DANOSA reserves the right to modify, without prior notice, the data reflected in this documentation.


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